Bone milling burr shaft



FIG. 1 is a perspective view of a burr shaft showing our new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 3 is a front elevational view thereof, the back being a mirror image thereof;

FIG. 4 is a bottom elevational view thereof;

FIG. 5 is a top elevational view thereof; and

FIG. 6 is a sectional view taken along line 6--6 of FIG. 3;

FIG. 7 is a perspective view of a burr shaft showing a second embodiment of our new design;

FIG. 8 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 9 is a front elevational view thereof, the back side being a mirror image thereof;

FIG. 10 is a bottom elevational view thereof;

FIG. 11 is a top elevational view thereof; and

FIG. 12 is a sectional view taken along line 12--12 of FIG. 9;

FIG. 13 is a perspective view of a burr shaft showing a third embodiment of our new design;

FIG. 14 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 15 is a front elevational view thereof, the back side being a mirror image thereof;

FIG. 16 is a bottom elevational view thereof;

FIG. 17 is a top elevational view thereof; and

FIG. 18 is a sectional view taken along line 18--18 of FIG. 15;

FIG. 19 is a perspective view of a burr shaft showing a fourth embodiment of our new design;

FIG. 20 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 21 is a front elevational view thereof, the back side being a mirror image thereof;

FIG. 22 is a bottom elevational view thereof;

FIG. 23 is a top elevational view thereof; and,

FIG. 24 is a sectional view taken along line 24--24 of FIG. 21.

A burr head is shown in broken lines in FIG. 1-5, 7-11, 13-17, and 19-24 to illustrate the environment of the invention but does not constitute a part of the invention. 

The ornamental designs for a bone milling burr shaft, as shown and described. 